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<div class="content" data-ice="content"><h1 data-ice="title">src/toolbar/OrthoMode.js</h1>
<pre class="source-code line-number raw-source-code"><code class="prettyprint linenums" data-ice="content">import {Controller} from &quot;../Controller.js&quot;;

/** @private */
class OrthoMode extends Controller {

    constructor(parent, cfg) {

        super(parent, cfg);

        if (!cfg.buttonElement) {
            throw &quot;Missing config: buttonElement&quot;;
        }

        this._buttonElement = cfg.buttonElement;

        this.on(&quot;enabled&quot;, (enabled) =&gt; {
            if (!enabled) {
                this._buttonElement.classList.add(&quot;disabled&quot;);
            } else {
                this._buttonElement.classList.remove(&quot;disabled&quot;);
            }
        });

        this._buttonElement.addEventListener(&quot;click&quot;, (event) =&gt; {
            if (this.getEnabled()) {
                this.setActive(!this.getActive(), () =&gt; {
                });
            }
            event.preventDefault();
        });

        this.bimViewer.on(&quot;reset&quot;, () =&gt; {
            this.setActive(false);
        });

        this.viewer.camera.on(&quot;projection&quot;, () =&gt; {
            const isOrtho = (this.viewer.camera.projection === &quot;ortho&quot;);
            this._active = isOrtho;
            if (this._active) {
                this._buttonElement.classList.add(&quot;active&quot;);
            } else {
                this._buttonElement.classList.remove(&quot;active&quot;);
            }
        });

        this._active = false;
        this._buttonElement.classList.remove(&quot;active&quot;);
    }

    setActive(active, done) {
        if (this._active === active) {
            if (done) {
                done();
            }
            return;
        }
        this._active = active;
        if (active) {
            this._buttonElement.classList.add(&quot;active&quot;);
            if (done) {
                this._enterOrthoMode(() =&gt; {
                    this.fire(&quot;active&quot;, this._active);
                    done();
                });
            } else {
                this._enterOrthoMode();
                this.fire(&quot;active&quot;, this._active);
            }
        } else {
            this._buttonElement.classList.remove(&quot;active&quot;);
            if (done) {
                this._exitOrthoMode(() =&gt; {
                    this.fire(&quot;active&quot;, this._active);
                    done();
                });
            } else {
                this._exitOrthoMode();
                this.fire(&quot;active&quot;, this._active);
            }
        }
    }

    _enterOrthoMode(done) {
        if (done) {
            this.viewer.cameraFlight.flyTo({projection: &quot;ortho&quot;, duration: 0.5}, done);
        } else {
            this.viewer.cameraFlight.jumpTo({projection: &quot;ortho&quot;});
        }
    }

    _exitOrthoMode(done) {
        if (done) {
            this.viewer.cameraFlight.flyTo({projection: &quot;perspective&quot;, duration: 0.5}, done);
        } else {
            this.viewer.cameraFlight.jumpTo({projection: &quot;perspective&quot;});
        }
    }
}

export {OrthoMode};</code></pre>

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